基于虚拟目标的反舰导弹的最优制导律研究

为了对抗敌方预警系统的跟踪、预测以及远程防空导弹的拦截,反舰导弹的飞行弹道应采用大空域变轨弹道。将弹目相对运动分解为俯仰和航向两个平面内的运动,考虑了制导过程中能量消耗最小以及末端角度要求,分别设计了两个平面内的最优制导律。利用该制导律可以引导反舰导弹向大空域内任何虚拟目标进行变轨机动,从而实现了各种各样的大空域变轨弹道。只要虚拟目标参数设置合适,反舰导弹的各项性能指标均能满足要求。弹道仿真表明了所设计的最优制导律的有效性。

Research on the optimal guidance law for antiship missile based on the virtual targets

In order to withstand both the tracking and prediction of enemy alarm system and the interception of long-distance aerial defence missiles,the flight trajectory of an antiship missile ought to adopt the large airspace variable trajectory.The relative motion of antiship missile and virtual target is disassembled into that of pitch plane and yaw plane.The optimal guidance law of each plane is designed,respectively,considering the minimum energy consuming and terminal angular constraint.The antiship missile can maneuver to any virtual target in large airspace guided by this guidance law;thus it can realize all kinds of large airspace variable trajectories.So long as the parameters of the virtual targets are appropriate,all performance indexes of the missile can satisfy the requirements.The trajectory simulation shows the effectiveness of the designed optimal guidance law.